Debug locally: "ImportError: No module named debugpy"

[marciogoulart]

System details (run the AWS: About Toolkit command)

• OS: Microsoft Windows 10
• Visual Studio Code version: 1.74.2
• AWS Toolkit version: 1.59.0

Question

Hi,

I would like support to debug a lambda built in CDK locally in VSCODE.

When I run the lambda via SAM LOCAL INVOKE it works perfectly, but when I add a breakpoint and run it in debug mode, some problems arise.

I performed some tests, the
aws_toolkit.log
main problem is not finding the debugpy module, but it is attached.

[marciogoulart]

lauch.json:

{
"configurations": [
{
"type": "aws-sam",
"request": "direct-invoke",
"name": "CodeverifyLocationLambda",
"invokeTarget": {
"target": "code",
"projectRoot": "VerifyLocationLambda",
"lambdaHandler": "verifyLocationLambda.lambda_handler"
},
"sam": {
"localArguments": [
"--template",
"${workspaceFolder}/NaasVerifyLocationRepository/infra/cdk.out/VerifyLocationFunctionStack.template.json",
"--debug"
]
},
"lambda": {
"runtime": "python3.8",
"memoryMb": 128,
"timeoutSec": 30,
"payload": {
"path": "${workspaceFolder}/NaasVerifyLocationRepository/infra/test.json"
},
"environmentVariables": {
"AWS_PROFILE": "outposts-stage"
},
},
}
]
}

[JadenSimon]

Hey @marciogoulart,

Our support for CDK-generated templates is basically non-existent so it's hard to say where exactly the problem is. One error from your logs does stand out to me (as you've already mentioned):

ImportError: No module named debugpy

I believe this could be due to using layers. Perhaps explicitly adding debugpy as a dependency for your project will fix things.

[justinmk3]

related:

• Toolkit can debug template.yaml generated by CDK #2853
• SAM Debug: failed to build layers with Python #2468

[arash-cid]

reopen this 💩 please

[justinmk3]

@arash-cid this is tracked in #2468 , which also mentions a workaround.

Please keep comments constructive.